public class People {
   protected double weight,height;
   public void speakHello() {
      System.out.println("yayayaya");
   }  
   public void averageHeight() {
       height=173;
       System.out.println("average height:"+height);
   }
   public void averageWeight() {
      weight=70;
      System.out.println("average weight:"+weight);
   }
}
